As a result, gas prices have sunk to $39 per million British thermal units, from $100 in August.
因此，天然气价格从 8 月份的每百万英热单位 100 美元跌至 39 美元。
经济学人-科技
GlassPoint's boss, Rod MacGregor, thinks that taking capital costs and the lifetime of the plant into account his firm can produce steam at $3.78 per million British thermal units (btu), which is $3.58 a gigajoule.
英热单位(British thermal unit，简称BTU，有时也被写成 Btu) 是一个传统英制的能量或热量单位，约等于 1,055 焦耳，是将一磅的水由华氏39度加热至华氏40度所需的热能。 此一单位通常用在蒸汽机、暖气、冷气、电热等产业。科学界通常使用 SI 制标准单位：焦耳。
英语百科
British thermal unit 英热单位
（重定向自Thermal unit）
The British thermal unit (BTU or Btu) is a traditional unit of work equal to about 1055 joules. It is the amount of work needed to raise the temperature of one pound of water by one degree Fahrenheit. One four-inch wooden kitchen match consumed completely generates approximately 1 BTU. In science, the joule, the SI unit of energy, has largely replaced the BTU.